These total knee prostheses permit flexion and extension and allow for a limited rotation. The linked total knee prostheses, however, prevent movements to both sides (abduction and adduction) of the knee joint. That is their purpose: to provide the total knee with intrinsic side stability.

The limited amount of rotation, that these prostheses allow, improves gait and decreases stresses on the bone -skeleton interface created by walk and other activities. Thus, in contrast to the old true hinged total knees, the linked total knee prostheses have lover rates of complications. (more…)